Place
ribs from setting out point as indicated
on drawing at approximate centers. Space
accurately by placing one closed-end
hollow block at each end of span.In
accordance with SABS 0100,
minimum bearing of 35mm onto load bearing
brickwork.

Prop (if required)
before placing balance of hollow blocks
as detailed. Leave out blocks for
stiffener ribs as per drawings.

Place stiffener rib (cross-rib)
reinforcement. Install services over
blocks and not on top of ribs (N170
and N255 slab services are to be placed
as per diagram).
Then place mesh over blocks (NB:
No mesh required for N range blocks).

Before placing any concrete
slabs are to be inspected by the
supervising engineer or
appointed representative.

Use a minimum 25 MPa
strength concrete at 28 days as the structural
topping. Casting must be continuous to create
monolithic slab. Heaping of concrete must be
avoided. Concrete is to be mechanically vibrated.
Should you have any queries, contactSuperSlabs
for advice.

Keep
slab wet for 3 to 4 days after concreting.

Temporary
propping may be removed when the in-situ concrete
has reached a crushing strength of 17 MPa, or
according to supervising Engineers instructions.